theorem sectorAllocationDistortion_nonneg (e : NSectorEconomy N) (n : Fin N) :
0 ≤ sectorAllocationDistortion e n := by
unfold sectorAllocationDistortion
exact allocationDistortion_nonneg (e.hT n) (sectorCriticalFriction_pos e n)Multiplier-Cycle Duality in a Multi-Sector Economy